BackPolyatomic Ions definitions
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1/15BackSkip to main contentBackPolyatomic Ion
A group of covalently bonded atoms from different elements carrying an overall charge, acting as a single charged unit. Oxyanion
A negatively charged polyatomic ion containing oxygen, often with a nonmetal as the central atom. Trioxide
A polyatomic ion structure containing three oxygen atoms, typically ending with the suffix 'ate' in its name. Tetraoxide
A polyatomic ion structure containing four oxygen atoms, commonly found in ions like sulfate and phosphate. Halogenoxyanion
A polyatomic ion containing a halogen and oxygen, with naming based on the number of oxygens and specific prefixes or suffixes. Charge Pattern
A predictable sequence of negative charges for trioxides and tetraoxides, determined by periodic table groupings. Suffix
The ending part of a polyatomic ion's name, such as 'ate' or 'ite', indicating the number of oxygens present. Prefix
The beginning part of a polyatomic ion's name, like 'per-' or 'hypo-', used to indicate the number of oxygens. Ammonium
A positively charged polyatomic ion with the formula NH4+, unique among common polyatomic ions for its positive charge. Mercury(I) Ion
A polyatomic cation formed by two mercury atoms, each with a +1 charge, resulting in a combined 2+ charge. Permanganate
A tetraoxide polyatomic ion with the formula MnO4−, notable for not fitting standard charge or naming patterns. Chromate
A tetraoxide polyatomic ion with the formula CrO4^2−, requiring memorization due to its irregular pattern. Oxalate
A polyatomic ion with the formula C2O4^2−, classified among the 'other' tetraoxides due to its unique structure. Cyanide
A simple polyatomic ion with the formula CN−, lacking oxygen and not fitting the trioxide or tetraoxide categories. Acetate
A polyatomic ion with the formula C2H3O2− or CH3COO−, commonly encountered in organic and general chemistry.
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